2024-04-29_23be6646740fff1a0de111d165f72e85_bkransomware_floxif

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General

Target

2024-04-29_23be6646740fff1a0de111d165f72e85_bkransomware_floxif
Size

3.7MB
MD5

23be6646740fff1a0de111d165f72e85
SHA1

730419712d3497b2cad4a41bf9ef363d6a0921e1
SHA256

2973e607015201ba1f3bc5d568c78fcb9cf38bf26e57946a6accaa7619e55c44
SHA512

67a06c6143a88a27bc5257c7f9b46ded9c2e57f7bb0e4009a44baf3a2277d81bf29dea649c282e3d1da4235e348ca8d2a0b839cb06e36b776dc0f2cf1fd8ca49
SSDEEP

98304:mwv3IEtyxFo9yvZtzkr2c26T2jRFLOAkGkzdnEVomFHKnPIo:m6ZmF6T2jRFLOyomFHKnPIo

Score

1^/10

Malware Config

Signatures

NSIS installer 1 IoCs

installer

resource	yara_rule
sample	nsis_installer_2

Files

2024-04-29_23be6646740fff1a0de111d165f72e85_bkransomware_floxif
.exe windows:6 windows x86 arch:x86

2301e2648c78eafaa251a04c59ba91a7

Code Sign

77:bd:0e:05:b7:59:0b:b6:1d:47:61:53:1e:3f:75:ed
Certificate

Issuer

CN=GlobalSign Code Signing Root R45,O=GlobalSign nv-sa,C=BE

Not Before

28/07/2020, 00:00

Not After

28/07/2030, 00:00

Subject

CN=GlobalSign GCC R45 EV CodeSigning CA 2020,O=GlobalSign nv-sa,C=BE

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

44:95:f8:c6:ea:29:57:db:df:e7:34:89
Certificate

Issuer

CN=GlobalSign GCC R45 EV CodeSigning CA 2020,O=GlobalSign nv-sa,C=BE

Not Before

22/09/2022, 07:29

Not After

31/10/2023, 05:46

Subject

SERIALNUMBER=110111-0725064,CN=HANCOM. INC\,,O=HANCOM. INC\,,STREET=49 Daewangpangyo-ro 644beon-gil\, Bundang-gu,L=Seongnam-si,ST=Gyeonggi-do,C=KR,1.3.6.1.4.1.311.60.2.1.3=#13024b52,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

01:b2:8b:d4:cf:ee:ee:0d:be:d0:b3:0d:9b:f8:43:6a
Certificate

Issuer

CN=GlobalSign Timestamping CA - SHA384 - G4,O=GlobalSign nv-sa,C=BE

Not Before

06/04/2022, 07:45

Not After

08/05/2033, 07:45

Subject

CN=Globalsign TSA for CodeSign1 - R6,O=GlobalSign nv-sa,C=BE

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

01:ec:1c:92:40:de:fd:2e:40:5d:7c:47:74
Certificate

Issuer

CN=GlobalSign,OU=GlobalSign Root CA - R6,O=GlobalSign

Not Before

20/06/2018, 00:00

Not After

10/12/2034, 00:00

Subject

CN=GlobalSign Timestamping CA - SHA384 - G4,O=GlobalSign nv-sa,C=BE

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

45:e6:bb:03:83:33:c3:85:65:48:e6:ff:45:51
Certificate

Issuer

CN=GlobalSign,OU=GlobalSign Root CA - R6,O=GlobalSign

Not Before

10/12/2014, 00:00

Not After

10/12/2034, 00:00

Subject

CN=GlobalSign,OU=GlobalSign Root CA - R6,O=GlobalSign

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

f8:f6:9f:51:09:0a:dd:8f:35:01:59:f8:3b:4a:bb:85:24:66:b2:dc:73:aa:9a:16:e6:9a:08:fb:f6:e5:76:45
Signer

Actual PE Digest

f8:f6:9f:51:09:0a:dd:8f:35:01:59:f8:3b:4a:bb:85:24:66:b2:dc:73:aa:9a:16:e6:9a:08:fb:f6:e5:76:45

Digest Algorithm

sha256

PE Digest Matches

false

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

PDB Paths

D:\HncUtils\install\InstallUtils\HOfficeDN\HancomDN_Package\Output\HOfficeDN_2024_Home.pdb

Imports

kernel32

GetConsoleCP
GetConsoleMode
ReadConsoleW
SetFilePointerEx
OutputDebugStringW
GetCPInfo
LCMapStringW
WriteConsoleW
SetEnvironmentVariableA
GetOEMCP
GetACP
IsValidCodePage
TerminateProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
FreeEnvironmentStringsW
GetEnvironmentStringsW
QueryPerformanceCounter
GetStartupInfoW
GetStdHandle
GetFileType
SetStdHandle
GetSystemTimeAsFileTime
VirtualQuery
VirtualAlloc
GetSystemInfo
FindResourceW
HeapQueryInformation
IsProcessorFeaturePresent
IsDebuggerPresent
ExitThread
CreateThread
GetTimeZoneInformation
GetModuleHandleExW
ExitProcess
RtlUnwind
GetCommandLineW
FindResourceExW
GetWindowsDirectoryW
SearchPathW
GetProfileIntW
Sleep
VirtualProtect
GetTempPathW
GetTempFileNameW
GetTickCount
SetErrorMode
GetFileTime
GetFileSizeEx
GetFileAttributesExW
FileTimeToLocalFileTime
FileTimeToSystemTime
GlobalGetAtomNameW
GetFileAttributesW
VerifyVersionInfoW
VerSetConditionMask
GlobalFlags
GetUserDefaultUILanguage
GetSystemDefaultUILanguage
GetLocaleInfoW
CompareStringW
GetStringTypeW
GetCurrentDirectoryW
LocalReAlloc
LocalAlloc
GlobalHandle
GlobalReAlloc
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
InitializeCriticalSection
GlobalFindAtomW
GetSystemDirectoryW
EncodePointer
GlobalAddAtomW
WritePrivateProfileStringW
GetPrivateProfileStringW
GetPrivateProfileIntW
ResumeThread
SetThreadPriority
WaitForSingleObject
GetThreadLocale
lstrcmpiW
GetCurrentProcess
DuplicateHandle
CloseHandle
WriteFile
UnlockFile
SetFilePointer
SetEndOfFile
ReadFile
LockFile
GetVolumeInformationW
GetFullPathNameW
GetFileSize
FlushFileBuffers
FindFirstFileW
FindClose
DeleteFileW
CreateFileW
CopyFileW
FormatMessageW
MulDiv
LocalFree
GlobalSize
GetCurrentProcessId
GlobalUnlock
LoadLibraryW
LoadLibraryA
GetProcAddress
GetModuleHandleW
GetModuleHandleA
InitializeCriticalSectionAndSpinCount
SetLastError
OutputDebugStringA
lstrcpyW
GlobalFree
FreeResource
WideCharToMultiByte
MultiByteToWideChar
lstrcmpW
lstrcmpA
GlobalDeleteAtom
GlobalLock
GlobalAlloc
LoadLibraryExW
GetModuleFileNameW
FreeLibrary
GetVersionExW
GetCurrentThreadId
GetCurrentThread
DeleteCriticalSection
DecodePointer
EnterCriticalSection
HeapSize
GetLastError
RaiseException
InitializeCriticalSectionEx
LeaveCriticalSection
GetProcessHeap
HeapFree
HeapAlloc
HeapReAlloc
GetSystemDefaultLCID
SizeofResource
LockResource
LoadResource

user32

GetKeyboardLayout
ToUnicodeEx
RegisterClipboardFormatW
ReuseDDElParam
UnpackDDElParam
InsertMenuItemW
TranslateAcceleratorW
LoadAcceleratorsW
UpdateLayeredWindow
SendDlgItemMessageA
GetUpdateRect
SetClassLongW
DestroyAcceleratorTable
ModifyMenuW
IsMenu
SetMenuDefaultItem
GetMenuDefaultItem
GetMenuItemInfoW
CopyIcon
GetIconInfo
GetDoubleClickTime
EnableScrollBar
DestroyMenu
LockWindowUpdate
CreatePopupMenu
BringWindowToTop
UnionRect
SetCursorPos
NotifyWinEvent
GetSystemMenu
LoadMenuW
GetAsyncKeyState
IsZoomed
TrackMouseEvent
LoadImageW
DestroyIcon
EmptyClipboard
SetClipboardData
CloseClipboard
OpenClipboard
MonitorFromPoint
SetParent
EnumDisplayMonitors
SetRectEmpty
SetLayeredWindowAttributes
MessageBeep
GetNextDlgGroupItem
IntersectRect
SetRect
InvalidateRgn
CopyAcceleratorTableW
CharNextW
KillTimer
SetTimer
RealChildWindowFromPoint
DeleteMenu
SystemParametersInfoW
CopyImage
WindowFromPoint
ReleaseCapture
SetCapture
WaitMessage
GetMonitorInfoW
MonitorFromWindow
WinHelpW
GetScrollInfo
SetScrollInfo
GetTopWindow
GetClassLongW
EqualRect
CopyRect
AdjustWindowRectEx
RemovePropW
GetPropW
SetPropW
ShowScrollBar
GetScrollRange
SetScrollRange
GetScrollPos
InvertRect
ScrollWindow
SetForegroundWindow
GetForegroundWindow
TrackPopupMenu
SetMenu
GetMenu
GetCapture
EndDeferWindowPos
DeferWindowPos
BeginDeferWindowPos
SetWindowPlacement
GetWindowPlacement
IsChild
CreateWindowExW
GetClassInfoExW
GetClassInfoW
RegisterClassW
CallWindowProcW
DefWindowProcW
GetMessageTime
GetMessagePos
IsDialogMessageW
SetWindowLongW
GetWindowTextLengthW
GetWindowTextW
SetWindowTextW
SetFocus
GetDlgCtrlID
CheckDlgButton
MoveWindow
ShowWindow
GetClassNameW
InvalidateRect
UpdateWindow
SetCursor
ShowOwnedPopups
ValidateRect
GetKeyState
PeekMessageW
DispatchMessageW
TranslateMessage
GetMessageW
LoadBitmapW
SetMenuItemInfoW
GetMenuCheckMarkDimensions
SetMenuItemBitmaps
EnableMenuItem
CheckMenuItem
CharUpperW
CallNextHookEx
UnhookWindowsHookEx
SetWindowsHookExW
PtInRect
GetCursorPos
ScreenToClient
ClientToScreen
EndPaint
BeginPaint
ReleaseDC
GetWindowDC
GetDC
TabbedTextOutW
GrayStringW
DrawTextExW
DrawTextW
RemoveMenu
AppendMenuW
InsertMenuW
GetMenuItemCount
GetMenuItemID
GetSubMenu
GetMenuState
GetMenuStringW
HideCaret
GetWindowRgn
DestroyCursor
CreateMenu
GetComboBoxInfo
TranslateMDISysAccel
DefMDIChildProcW
DefFrameProcW
DrawMenuBar
MapVirtualKeyExW
IsCharLowerW
PostThreadMessageW
GetLastActivePopup
GetWindowThreadProcessId
IsClipboardFormatAvailable
FrameRect
CharUpperBuffW
SubtractRect
GetKeyNameTextW
CreateAcceleratorTableW
MapVirtualKeyW
SetScrollPos
GetKeyboardState
GetWindowLongW
SetActiveWindow
IsWindowEnabled
GetActiveWindow
GetNextDlgTabItem
GetDlgItem
EndDialog
CreateDialogIndirectParamW
DestroyWindow
IsWindow
DrawIconEx
IsRectEmpty
OffsetRect
InflateRect
FillRect
DrawFocusRect
GetSysColorBrush
GetSysColor
MapWindowPoints
GetWindowRect
RedrawWindow
SetWindowRgn
DrawStateW
GetFocus
IsWindowVisible
DrawFrameControl
DrawEdge
RegisterWindowMessageW
MapDialogRect
GetWindow
GetParent
SetWindowContextHelpId
SetWindowPos
PostQuitMessage
PostMessageW
UnregisterClassW
EnableWindow
DrawIcon
GetClientRect
GetSystemMetrics
IsIconic
SendMessageW
LoadIconW
MessageBoxW
GetDesktopWindow
LoadCursorW

gdi32

GetObjectW
MoveToEx
TextOutW
SetViewportExtEx
SetViewportOrgEx
SetWindowExtEx
SetWindowOrgEx
OffsetViewportOrgEx
OffsetWindowOrgEx
ScaleViewportExtEx
ScaleWindowExtEx
GetRgnBox
CreateFontIndirectW
GetMapMode
SetRectRgn
DPtoLP
CreateCompatibleBitmap
CreateDIBitmap
EnumFontFamiliesW
GetTextCharsetInfo
RealizePalette
SetPixel
StretchBlt
CreateDIBSection
SetDIBColorTable
CreateRoundRectRgn
Rectangle
OffsetRgn
CreatePalette
GetPaletteEntries
GetNearestPaletteIndex
GetSystemPaletteEntries
EnumFontFamiliesExW
ExtFloodFill
SetPaletteEntries
FillRgn
FrameRgn
GetBoundsRect
PtInRegion
GetViewportOrgEx
LPtoDP
GetWindowOrgEx
SetPixelV
GetTextFaceW
SelectPalette
SelectObject
ExtSelectClipRgn
SelectClipRgn
SetTextAlign
SetTextColor
SetBkColor
SetROP2
SetPolyFillMode
GetLayout
SetLayout
SetMapMode
RoundRect
DeleteDC
SaveDC
RestoreDC
RectVisible
PtVisible
LineTo
IntersectClipRect
GetWindowExtEx
GetViewportExtEx
GetStockObject
GetPixel
GetObjectType
GetClipBox
ExcludeClipRect
Escape
DeleteObject
CreatePatternBrush
CreatePen
CreateCompatibleDC
CreateBitmap
BitBlt
GetDeviceCaps
CreateDCW
CopyMetaFileW
GetTextMetricsW
Polyline
Polygon
CreatePolygonRgn
ExtTextOutW
PatBlt
GetTextExtentPoint32W
GetTextColor
GetBkColor
Ellipse
CreateSolidBrush
CreateRectRgnIndirect
CreateRectRgn
CreateHatchBrush
CreateEllipticRgn
CombineRgn
SetBkMode

msimg32

AlphaBlend
TransparentBlt

winspool.drv

ClosePrinter
OpenPrinterW
DocumentPropertiesW

advapi32

RegSetValueExW
RegEnumKeyExW
RegEnumValueW
RegQueryValueW
RegEnumKeyW
RegCloseKey
RegDeleteValueW
RegDeleteKeyW
RegCreateKeyExW
RegQueryValueExW
RegOpenKeyExW

shell32

ShellExecuteW
ord164
SHGetMalloc
SHGetPathFromIDListW
SHGetSpecialFolderLocation
SHBrowseForFolderW
SHGetDesktopFolder
DragFinish
DragQueryFileW
SHGetSpecialFolderPathW
SHAppBarMessage
SHGetFileInfoW

comctl32

InitCommonControlsEx

shlwapi

PathFindExtensionW
PathIsUNCW
PathStripToRootW
PathFindFileNameW
StrFormatKBSizeW
PathFileExistsW
PathRemoveFileSpecW

uxtheme

GetThemeColor
GetWindowTheme
GetThemeSysColor
IsThemeBackgroundPartiallyTransparent
OpenThemeData
CloseThemeData
DrawThemeBackground
GetThemePartSize
DrawThemeParentBackground
GetCurrentThemeName
IsAppThemed
DrawThemeText

ole32

OleFlushClipboard
OleUninitialize
OleInitialize
CoFreeUnusedLibraries
CoDisconnectObject
CreateStreamOnHGlobal
CreateILockBytesOnHGlobal
StgOpenStorageOnILockBytes
StgCreateDocfileOnILockBytes
CoGetClassObject
CoInitialize
CoCreateInstance
ReleaseStgMedium
OleDuplicateData
OleIsCurrentClipboard
CoTaskMemFree
CoTaskMemAlloc
CLSIDFromProgID
CLSIDFromString
CoCreateGuid
CoUninitialize
IsAccelerator
OleTranslateAccelerator
OleDestroyMenuDescriptor
OleCreateMenuDescriptor
CoRegisterMessageFilter
CoRevokeClassObject
CoInitializeEx
OleLockRunning
RevokeDragDrop
RegisterDragDrop
CoLockObjectExternal
OleGetClipboard
DoDragDrop

oleaut32

SysAllocString
VarBstrFromDate
VariantCopy
LoadTypeLi
SafeArrayDestroy
VariantTimeToSystemTime
SystemTimeToVariantTime
SysStringLen
OleCreateFontIndirect
VariantChangeType
VariantClear
VariantInit
SysAllocStringLen
SysFreeString

oledlg

OleUIBusyW

gdiplus

GdipSetInterpolationMode
GdipCreateFromHDC
GdipCreateBitmapFromHBITMAP
GdipDrawImageI
GdipDeleteGraphics
GdipBitmapUnlockBits
GdipBitmapLockBits
GdipCreateBitmapFromScan0
GdipCreateBitmapFromStream
GdipGetImagePaletteSize
GdipGetImagePalette
GdipGetImagePixelFormat
GdipGetImageHeight
GdipGetImageWidth
GdipGetImageGraphicsContext
GdipDisposeImage
GdipCloneImage
GdiplusStartup
GdipFree
GdipAlloc
GdiplusShutdown
GdipDrawImageRectI

oleacc

CreateStdAccessibleObject
AccessibleObjectFromWindow
LresultFromObject

imm32

ImmReleaseContext
ImmGetContext
ImmGetOpenStatus

winmm

PlaySoundW

Sections

.text
Size: 1.3MB - Virtual size: 1.3MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 323KB - Virtual size: 322KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 26KB - Virtual size: 56KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 1.8MB - Virtual size: 1.8MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 118KB - Virtual size: 118KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

2301e2648c78eafaa251a04c59ba91a7

Code Sign

77:bd:0e:05:b7:59:0b:b6:1d:47:61:53:1e:3f:75:edCertificate

Extended Key Usages

Key Usages

44:95:f8:c6:ea:29:57:db:df:e7:34:89Certificate

Extended Key Usages

Key Usages

01:b2:8b:d4:cf:ee:ee:0d:be:d0:b3:0d:9b:f8:43:6aCertificate

Extended Key Usages

Key Usages

01:ec:1c:92:40:de:fd:2e:40:5d:7c:47:74Certificate

Key Usages

45:e6:bb:03:83:33:c3:85:65:48:e6:ff:45:51Certificate

Key Usages

f8:f6:9f:51:09:0a:dd:8f:35:01:59:f8:3b:4a:bb:85:24:66:b2:dc:73:aa:9a:16:e6:9a:08:fb:f6:e5:76:45Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

user32

gdi32

msimg32

winspool.drv

advapi32

shell32

comctl32

shlwapi

uxtheme

ole32

oleaut32

oledlg

gdiplus

oleacc

imm32

winmm

Sections

.text Size: 1.3MB - Virtual size: 1.3MB

.rdata Size: 323KB - Virtual size: 322KB

.data Size: 26KB - Virtual size: 56KB

.rsrc Size: 1.8MB - Virtual size: 1.8MB

.reloc Size: 118KB - Virtual size: 118KB

77:bd:0e:05:b7:59:0b:b6:1d:47:61:53:1e:3f:75:ed
Certificate

44:95:f8:c6:ea:29:57:db:df:e7:34:89
Certificate

01:b2:8b:d4:cf:ee:ee:0d:be:d0:b3:0d:9b:f8:43:6a
Certificate

01:ec:1c:92:40:de:fd:2e:40:5d:7c:47:74
Certificate

45:e6:bb:03:83:33:c3:85:65:48:e6:ff:45:51
Certificate

f8:f6:9f:51:09:0a:dd:8f:35:01:59:f8:3b:4a:bb:85:24:66:b2:dc:73:aa:9a:16:e6:9a:08:fb:f6:e5:76:45
Signer

.text
Size: 1.3MB - Virtual size: 1.3MB

.rdata
Size: 323KB - Virtual size: 322KB

.data
Size: 26KB - Virtual size: 56KB

.rsrc
Size: 1.8MB - Virtual size: 1.8MB

.reloc
Size: 118KB - Virtual size: 118KB